Water-heater.



WATER HEATER.

APPLICATION :FILED JULY e, 190e.

Patented July 13, 1909.

ANDREW. u. cumul om PNow-umoanwnins. wAsHmGvoN, u c

UNrrED srnrns PATENT onnron.

DAVID W. CUNNINGHAM, OF DES MOINES, IOWA.

WATER-HEATER.

" To all whom it may` concern.'

` Be it known that I, DAVID W. CUNNING- HAM, a citizen of the United States, residing at Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Water-Heater for Locomotive- Boilers, of which the following is a specifica tion.

My object is to provide a waterheater of simple, durable and inexpensive constructionespecially designed for use in connection with the cleaning of locomotive boilers and it is intended to receive the steam and hot water from a locomotive boiler which will heat the water in the apparatus and the water thus heated is to be used for cleaning out the boiler of the locomotive that supplied the steam and also for refilling the same locomotive boiler with clean. water at such a temperature that its introduction into the locomotive boiler will not tend to cause undue contracr tionior expansion and so that the water thus supplied to the locomotive boiler may be quickly and easily brought to boiling point so that steam may be raised in the locomo tive boiler without delay.

`A further object is to provide a heater of this kind in which the steam and hot water from a number of boilers may be introduced `simultaneously `and the pressure of steam from one boiler will not cause a backward flow into anotherboiler in which the steam is at lower pressure.

A further object is to provide a heater that will utilize the steam and hot water from locomotive boilers in such manner as to impart a maximum of its heat to the water in the heater without becoming commingled therewith.

My invention consists in the construction, arrangement and combination of the various parts of the heater whereby theobjects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which y Figure 1 shows a vertical, longitudinal, sectional view through a heater embodying my invention. Fig. 2 shows an end elevation of same.

verse, sectional view on the line 3.-3 of Fig. p 1. i Fig. Llshows an enlarged, detail, sectional view of the gate valve for controlling the ad- Specification of Letters Patent.

Application led July t,` 1906.

Fig. 3 shows a vertical, trans-.

Patented July 18, 1909.

Serial No. 325,394.

Referring to the accompanying drawings,

.l have used the reference numeral 1() to indicate the main cylinder of the heater which is provided, near its ends, with the cylinder heads 11. A series of tubes l2 is connected with these heads 11 and extended through them to communicate with the ends of the cylinder' beyond the heads 11. An outer cylinder' head 13 is formed at the iront of the cylinder l0 and the space between the heads 11 and 13 ,is divided, by means of the horizontal partitions 14 and 15, into three cham-- bers 16, 17 and 13, for purposes hereinafter made clear. A cylinder head 19 is placed at the rear of the cylinder 10 forming a compartment 20 between it and the .head 11. On top of the cylinder 10 are two supporting braces 21 on which is mounted a superheating cylinder 22. This su oerheating cylinder has, near its ends, ytwo cylinder heads 23 and at its forward end is a cylinder head 24. The space between the forward head 23 and the head 2li-is divided by a central horizontal partition 25 into the upper compartment 26 and` the lower compartment 27 and at the rear of the cylinder 22 is a cylinder head 2S forming a compartment 2Q between it and the rear cylinder head 23. A series of tubes 30 is fixed to and extended. through the cylinder heads 23 to communicate with the spaces between the heads 23 and the heads 24 and 28.

Communicating with the compartment 17 of the main heater cylinder is a heater supply pipe 31 for steam and het water communicating with the horizontal pipe 32. Near the top of the pipe 31 is a check valve 31a ar ranged to permit passage of steam and water downwardly through the pipe 31 and to prevent passage of water or steam u wardly.

. Communicating with the horizonta pipe 32 is a number of pipes to be connected with the blow-off pipes oflocomotive boilers. lilaeh of these blow-oit pipes comprises an upright pipe 33 extending to a point above the pipe 32 and communicating with a horizontal pipe 34 above the pipe 32, which horizontal pipe 34 has an .elbow 35 which communicates with the pipe 32. In the said horizontal pipe 34 is a check valve 36 similar to the check valve shown in detail in Fig. 5 and so arranged that steam and hot water may ent-er from the pipe 33 to the pipe 32 but may not return. I have also provided means for admitting exhaust steam from a stationary engine or other source of supply to the pipe 32 as fol'- lows: The numeral 37 indicates a vertical pipe of substantially the same diameter as the pipe 32 designed to communicate with the exhaust pipe of a stationary engine and extended to a point above the pipe 32. It is provided with a horizontally arranged portion 38 containing a check valve 39 and beyond the check valve is an elbow 40 communicating with the pipe 32.

The main cylinder and the superheating cylinder are provided with a number of pipes for steam and water as follows: At the bottom of the main cylinder between the heads 11 is a pipe 41 for admitting fresh water to the interior of the cylinder. A pipe 42 conneets the top of the cylinder 10 with the bottom of the cylinder 22 to permit water to freely pass from one cylinder to the other around `the heating tubes thereof. top of the superheating cylinder 22 is a discharge pipe 43 from which the heated water is withdrawn. Communicating with the compartment 2() of the main cylinder is a pipe 44 provided with a gate valve 45 designed to be used for cleaning out any sediment or deposit that may be gathered therein. A simllar pipe communicates ywith the compartment 18 at the front of the main cylinder and is indicated by the numeral-46. It is provided with a gate valve 47. Communicating with the pipe 46, above the gate valve, is an overflow pi e 48 extended up-V wardly to a point slight y above the center ol' the main cylinder and then downwardly to a point of discharge, a vent tube 49 being provided in said pipe at its highest point to prevent siphonage of water from the main cylinder. The compartment 16 at the top of the front of the main cylinder communicates by means of a pipe 50 with the compartment 27 at the bottom of the front of the superheating cylinder and a steam discharge pipe 51 extends from the compartment 26 to a point of discharge.

The means for automatically supplying steam to the heater, from a source other than a locomotive boiler when the supply from a locomotive boiler is deficient is as follows: The numeral 52 indicates a steam supply pipe communicating with the pipe 31 and provided with a gate valve 53. Mounted on top of the superheating cylinder is a thermostatic valve 54 so arranged that its valve stem 55 will be drawn downwardly when the temperature of the interior of the superheating cylinder falls below a certain predetermined degree. Adjacent to the thermostatic valve 54 is a bracket 56 supporting a bell crank lever 57, which lever is connected by a link 58 with the stem of the gate valve 53.

Inpractical use and assuming that two locomotive boilers have their blow-off pipes connected to the pipes 33 and assuming further that one of these boilers contains steam at a hundred and fifty pounds pressure to the square inch and the other contains steam at ifty pounds pressure to the square inch and assuming further that the pipe 37 connects with the exhaust of a stationary engine and the pipe 52 connects with a stationary boiler, then the steam and hot water will flow through both of the pipes 33 into the horizontal main 32, downwardly through the pipe 31 to the compartment 17 of the main heater cylinder. The check valves 36 will prevent the steam from the locomotive boiler having a high pressure from flowing backwardly toward the locomotive boiler under low pressure and the check valve 39 will prevent the steam from iowing back into the steam pipe 37 and the check valve 31a will prevent the steam or water from ilowing upwardly in the pipe 31 in the .event that the pressure from below should exceed that from above. After the steam and hot water enters the chamber 17, the steam will rise to theV top tubes communicating with said chambers and the water will fall to the lower'tubes and both will ass to the opposite end of the cylinder. T ere the steam will rise and return through the tubes to the chamber 16 While the water will fall and return through the tubes into the chamber 18 from which it will gradually and slowly run through the drain 48 to a point of discharge. lts heat in the meanwhile will be utilized in heating the water surrounding the tubes. The steam that enters the chamber 16 will rise through the pipe 50 to the chamber 27 of the superheater and will then flow through the lower tubes thereof to the rear ends and will rise and return through the upper tubes to the chamber 26 and what remains of the steam at this point will discharge through the pipe 51. By

this arrangement of the artitions inthe 1 front ends ofthe lower cy inder, steam and hot water will be quickly separated and both will be caused to flow back and forth in the tubes without commingling with each other and both will also give off practically all of their heat which will be utilized in heating the water surrounding the tubes. locomotive boiler has discharged its steam and water, the operator uses water from the pipe 43 for the purpose of washing out the ocomotive boiler. f This water will be at substantially the same temperature as the interior of the locomotive boiler and hence will After one not tend to cause undue expansion or conontgaat ttraetierrcf theboiier. A-f-terthelbcomotive has been thoroughly cleaned, its boiler is `fllietl with water'ironjr the pip'eefl. Thiswater; being ylappreX-iniately at boiling point, wil-h permit the operai-tor to= quickly' get up1 steam se that the boiler may be used again with:l a oli delay for cleaning purpcsesa ihsffast asv thev waterf is withdrawn from the -piipcl A'123, it' will* entertlirough the `4` pilpcfii so t at both the-main heating cylin- :der andi thefsuperheating cylinder are mainstained@ teil? ofwater' atall. times. In event that it sl-'ioulid be desired to clean*` out l the lsedimentilo'r deposit that gather inthe` chambers 18% :and 20, 'the o erator opens thewgate' valves: 4:5 and. 4:7

motive boilers s fouild` be insiiiiicient at any time to maintain the proper degree of heat within:y the heater, their the thermostati'c vaived foperatesto openf the' gate valve andi-permit theintroduction of steam from a boiler .into the; pipe 3l which will cause the vidingf a sep water inthe heater to-be `uickly heated to` the .desired temperature, ereupon the gate valve 5-31w1'r11be automaticallyclosedi.

The chambers 11261,. 127 andf 18 at one cndfot tliexheater body' are: tor the purpose of profarating `device to separate the ewater from `ail'ocomotive boiler` steam and and to@ give: to each ani independent circulaf tion thrciigh: the heater body;` En order to steam befarrangcdtto pass through the tubes getithe .best resultsyl it is desirable that the of the heater' body andi then back againy toward the separatingfchamber. Iit is valso desirable that the-#hot4 water be )ermitted to flow from the se aratingcha'm er through thetwbes in the oil'er and then down' and back againthrough the heater body toward the` separating chamber. By this arrangement, 'thefsteamr andshot water will. each be` given. :an independent circulation and they l Wi-lilnot interfiere with eachother. Furtherto` the heater under pressure'y and if any pumping'ismuecess-ary, itmay be done in con- I nectinnL the'vcolld water pipe leading to the heater body. n

li claim .as my iinventiioni. In: :a: `device of the class described, a

l heater body-portionfhavingclosed? ends, par-f and? lbwer chambers, :a:v heater supply pipe i titi'ons the 'body' spaced apart from theiendstoiornrfcompartments, tubes within the body portion communicating with thev compartments, a horizontal partition divide ing thel compartment at one end' into upper communicating one nci said; chambers `ssuniingture ther thatthesul"Y pliy of steam from: the loco pressure, a pipe@ anda steam discharge with the. other chamber.`

2. In a device of the class described", the

combination ot a heater bodyportion having closed ends, transverse partitions within the body portions spaced apart from the ends to form compartments, two horizontal partitions one compartment to formi upper,

middle 'and lower chambers therein, tubes within the body portion communicating with the compartments in the ends, a heater supply pipe introduced into the said middle chamber, a steam `discharge pipe communicating With the said upper chamber and a f combination of Va heater body portion vhaving closedy ends, transverse partitions Within the within the body portion communicating with the compartments in the ends, a heater supwater drain pipe communicating with the saidj lower chamber. Y

w3, In a device ot the class described, the

body portions spaced apart trom the ends to form compartments, two` `horizontal partitions in one compartment to form upper, middle and lower chambers therein, tubes ply pipe introduced into the said middle chamber, a steam discharge pipe communieating with the said upper chamber and a ywater overflow pipe communicating with the said1v llower chamber, saidoveriiow pipe being extended.` upwardly to `a point near the center lof` the middle chamber and then down*- wardly.

`4. In a device of the class described, the

i combination of a heater'body portion having closed ends,` transverse partitions within` the body'portions spaced apart from the ends to i'orin compartments, two lliorizontal partie tions ini one compartment to form upper, middle and lower chambers therein, tubes i within the body portion communicating with tliecompartmentsin the ends, a heater sup ply pipe introduced lintoy the said middle chamber, a steam discharge pipe communieating with the said upper chainbcrand a. water overflow pipe commumcatingwith `the said lower chamber, saidoveriiow pipe bei-ng ipwardly to apomt near the center ext-'ended Y l of: the mid e chamber and their downward lly and. havingy a vent opening ait its upper por- In a device of the class described, the

combination oi a main cylinderhaviiig closed ends, transverse partitions within; the cylin j der spaced apart trom the ends tolforni com partnients, two horizontal partitions in one of said com` art-ments form-nig upper, middle Vlandlower c lambers, tiifbesfwitliiiithecylin- `j der communicating with said; compartments,

a heater supply pipe communicating with said middle chamber, a steam-discliarge `pipe communicating with' said upper chamber, an overflow pipe communicating with the lower i chamber, a valve therein, afliranchabovc the pipe communicating valve extending upwardly to a point near the center of the middle chamber and then downwardly and -formed with a vent opening, a drain pipe in the compartment at the other end, and a valve therein.

6. In a. device of the class described, a heater body portion having closed ends, partitions within the body spaced apart from the en ds to 'form compartments, tubes within the body portion communicating with the compartments, a horizontal partition dividing the compartment at one end into upper and lower chambers, a heater supply pipe communicating with one of said chambers, a steam discharge pipe communicating with the other chamber, a superheater body portion above the main body portion and having closed ends, transverse partitions thereinspaced apart from the ends to form compartments, tubes within the superheater body portion communicating with the compartments, a horizontal partition in the compartment at one end dividing it into upper and lower chambers, said steam discharge pipe of the main heater body portion communicating with said superheater chamber and a steam escape pipe communicating with said superheater chamber.

7. In a device of the class described, the combination ol' a heater body portion having closed ends, transverse partitions within the body portion spaced apart from the ends to form compartments, two horizontal partitions in one compartment to form upper, middle and lower chambers therein, tubes within the body portion communicating with t-he compartments in the ends, a heater supply pipe intro duced into the said middle chamber,` a steam discharge pipe communicating with the said upper chamber, a water overflow pipe communicating with the said lower' chamber, a superheater body portion above the main body portion and having closed ends, transverse partitions therein spaced apart from the ends to form compartments,

l tubes within the body portion communicating with the compartments, a horizontal partition in the compartment at one end dividing it into upper and lower' chambers, said steam discharge pipe oi the main heater body portion communicating with said lower chamber and a steam escape pipe communicating with said upper compartment of the superheater.

8. In a device of the class described, the combination of a main cylinder having closed ends, transverse partitions therein spaced apart from the ends to form compartments, two horizontal partitions in one oi said compartments dividing it into upper, middle and lower chambers, tubes extended through the body portion and communicating with the compartments, pipes leading f rom the bottoms of the compartments,

valves therein, Ya heater supply pipe communicating with said middle chamber, a superheater cylinder supported on top of the main cylinder and having closed ends, transverse partitions therein spaced apart from the ends to form compartments, a horizontal partition in the compartment at one end dividing it into upper and lower chambers, a steam pipe communicating between the uper chamber kof the main cylinder and the lbwer chamber of the superheater-cylinder, a steam escape pipe leading from the upper chamber of the superheater cylinder, a water supply pipe communicating with the bottom ol' the main cylinder, a pipe communicating between the bodies of the cylinders, and a water discharge pipe communieating with the top of the superheater cylinder.

9. In a device of thevclass'described, the v combination of a heater body portion having a water inlet and a water outlet, a separating device, tubes communicating with the upper portion of the separating device and extended through theheater body and back toward the separating device to a point of discharge, tubes communicating with the lower portion of the separating device and extended through the body to a point of discharge, and means for introducing steam and water into the separating compartment.

10. In a device of the-class described, the combination of a heater body portion, a water inlet and a water outlet pipe communieating with it, said vheater body portion being inclosed to bev capable of containing water under pressure, a separating device,

tubes communicating with the upper portion of the separating device and extended through the heater body and back toward the separating device to a point of discharge, tubes communicating withgthe lower portion of the separating device and extended through the heater body to a point of discharge, and means for supplying steam and hot water to the separating device. Y

l1. In a device of the class described, the combination of a heater body capable ol' being {illed with water under pressure and having a water inlet and a water outlet, a separating device formed with an upper and a lower chamber, tubes communicating with the upper portion of the lower chamber and extended through the body portion and back to the upper chamber, said upper chamber being provided with a steam discharge pipe, tubes leading from the lower chamber through the body portion of the heater to a point of discharge, and means for introducing steam and hot water into f said lower chamber.

12. In a device of the class described, the combination ol a heater body designed to contain water under pressure and having a Water inlet and a water outlet7 a separating to the lower chamber, a water discharge pipe 10 device having upper, middle, and lower communicating with the lower chamber, and chambers therein, tubes communicating means for introducing steam and hot water with the upper portion of the middle chaminto the middle chamber. n 5 ber and'extended through the body portion Des Moines, Iowa, June 15, 1906.

` and back to the upper chamber, a steam dis- DAVID W. CUNNINGHAM.

charge pipe communicating with the upper Witnesses: chamber, tubes extended from the middle l S. F. CHRISTY, chamber through the heater body and back J. RALPH ORWIG. 

